Feed l



(No Model.) 7

F. j... MGGAHAN.

LUBRIGATOR.

No.'312,214. ented Feb. 10; 1885.

'UNETED Sterne Parent @rricn.

FRED L. MCGAHAN, or INDIANAPOLIS, INDIANA, Assioivon'or ONE-HALF TO GlLBERT w. WARREN, or SAME PLACE.

LUBRICATO R.

SPECIFICATION forming part of Letters Patent No. 312,214, dated February 10, 1885.

Application filed June 23, 1884. (No model.)

To aZZ whom it may concern:

Be it known that I, FRED L. llIOGAHAN, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Improvement in Lubricators, of which the following is a specification.

My invention relates to that class of lubricators in which the lubricant is automatically delivered to a machine from a reservoir at intervals dependent on the movements of said machine.

The object of my improvement is to provide a lubricator which may be connected directly 1 5 to mechanisms having interior moving parts as the cylinder or steam-chest of a steam-engine-so that the oil or other fluid lubricant contained in the reservoir will be discharged at intervals directly upon said moving part, the discharge being effected by contact of the said moving part with the valve mechanism of the lubricator, as hereinafter fully explained. The accompanying drawing illustrates my invention as applied to the cylinder ofa steamengine.

The figure represents a central longitudinal section of the entire device.

A is a chambered casting having at one end a closed extension, I), and at the other end a.

tubular extension, 0, which is adapted to be screwed into the cylinder-head d. The intel'lOl of c is provided with an annular shoulder, e.

fis a tube extending through chamber A and its extension 0 into the interior of the steam- 5 cylinder 9 a sufficient distance to comein contact with the piston h a little before the piston has completed its movement toward head (I. The end of tubef is notched, or of irregular form, so as to allow the oil to escape when the 0 end of the tube is in contact with the piston. Tube f is adapted to slide longitudinally in chamber A and extension 0, its outward movement being limited by a collar, 2', which comes in contact with shoulder e. A stuffing-box at 5 3' cuts off communication between the interior of chamber A and the interior of the steamcylinder, except through tube f, which is perforated at it. Near the outer end of tube f is a valve-seat, Z, and a valve, Z, closing the tube. A rod, in, smaller in diameter than the interior of tubef, extends from valve Z through tube f into the closed extension I), in the end of which is a set-screw, n, for regulating the opening of the valve.

For the purpose ofholding valveftoits seat a strong spiral spring, 0, is placed on rod at between the end of tubef and a washer, 1), secured to the end of the rod.

B is an oil-reservoir mounted on and com n'iunicating with chamber A. A piston, O, closely fits the interior of reservoir B. Said piston is for the purpose of forcing the oil from the reservoir into chamber A by means of a spiral spring, r, or other suitable force applie above said piston.

D is a spout through which the reservoir is 'iilled.

The operation of my device is as follows: Piston G is drawn upward to the top of the reservoir by means of the rod and handle E, and the reservoir filled through spout D. The oil fills chamber A and tube f, being prevented from passing into the cylinder by valve Z, piston I: being at the farther end of the cylinder, and the valve held tightly closed by spring 0. As the piston h moves toward head at it comes in contact with the end of tube f and carries the tube forward with it. The valve-rod m being held stationary by screw a, valve 1 is thus opened and the oil, being under pressure from spring 1' and piston O, is forcibly expelled between the end of tubef and the piston h, spreading radially over the piston tothe cylinder. At the same time spring 0 is compressed, and by its recoil, as piston h leaves tube f, serves to restore the tube and valve to their normal positions. By turning screw a tube f will be more orless projected into the cylinder, and valve Z consequently more or less opened at each stroke of the piston, thereby regulato ing the flow of oil. \Vhen the piston is at rest and not in contact with tube f, valve Zmay be opened by turning screw n inward. Tube f will then move forward till stopped by shoulder 6, and the valve will then open bythe fur- 5 ther movement of the screw.

I claim as my invention 1. The combination of the following ele ments, namely: a machine consisting of two parts, one of which parts is stationary, and the other part has a reciprocating movement Within or upon said stationary part, an oil-chamher secured to said stationary part by a tubular connection, atube having-an interior valveseat, and adapted to slide within said tubular connection and to come in contact with said reciprocating part, a valve fitted to said valve seat, a valve-rod, a spring on said rod, and means forsupplying oil under pressure to said oil-chamber, all combined and arranged to cooperate substantially as and for the purpose specified.

2. In a lubrieator, the combination of oilehambei- A, extensions 1) and c, tubef, valve Vitnesses:

H. P. HooD, A. M. H001). 

